import java.util.ArrayList;
import java.util.List;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 石方旭
 * Date: 2022-04-25
 * Time: 10:10
 */
public class TestDemo {

    public static void main(String[] args) {
       Integer a = 10;
       double d = a.intValue();
       double d1 = a.doubleValue();
    }

}
